/* packet-cops.c
* Routines for the COPS (Common Open Policy Service) protocol dissection
- * RFC2748
+ * RFC2748 & COPS-PR extension RFC3084
*
* Copyright 2000, Heikki Vatiainen <hessu@cs.tut.fi>
*
- * $Id: packet-cops.c,v 1.7 2000/12/27 12:38:08 guy Exp $
+ * $Id: packet-cops.c,v 1.29 2002/04/28 00:43:16 guy Exp $
*
* Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@zing.org>
+ * By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
- *
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include <stdio.h>
#include <stdlib.h>
-
#include <string.h>
+#include <ctype.h>
+
#include <glib.h>
-#include "packet.h"
+#include <epan/packet.h>
#include "packet-ipv6.h"
+#include "packet-frame.h"
+
+#include "asn1.h"
+#include "format-oid.h"
+#include "prefs.h"
#define TCP_PORT_COPS 3288
+/* Variable to hold the tcp port preference */
+static guint global_cops_tcp_port = TCP_PORT_COPS;
+
+/* desegmentation of COPS */
+static gboolean cops_desegment = TRUE;
+
+/* Variable to allow for proper deletion of dissector registration
+ * when the user changes port from the gui
+ */
+
+static guint cops_tcp_port = 0;
+
+static gchar *last_decoded_prid=NULL;
+
#define COPS_OBJECT_HDR_SIZE 4
+/* Null string of type "guchar[]". */
+static const guchar nullstring[] = "";
+
+#define SAFE_STRING(s) (((s) != NULL) ? (s) : nullstring)
+
+/* COPS PR Tags */
+
+#define COPS_IPA 0 /* IP Address */
+#define COPS_U32 2 /* Unsigned 32*/
+#define COPS_TIT 3 /* TimeTicks */
+#define COPS_OPQ 4 /* Opaque */
+#define COPS_I64 10 /* Integer64 */
+#define COPS_U64 11 /* Uinteger64 */
+
+/* COPS PR Types */
+
+#define COPS_NULL 0
+#define COPS_INTEGER 1 /* l */
+#define COPS_OCTETSTR 2 /* c */
+#define COPS_OBJECTID 3 /* ul */
+#define COPS_IPADDR 4 /* uc */
+#define COPS_UNSIGNED32 5 /* ul */
+#define COPS_TIMETICKS 7 /* ul */
+#define COPS_OPAQUE 8 /* c */
+#define COPS_INTEGER64 10 /* ll */
+#define COPS_UNSIGNED64 11 /* ull */
+
+
+typedef struct _COPS_CNV COPS_CNV;
+
+struct _COPS_CNV
+{
+ guint class;
+ guint tag;
+ gint syntax;
+ gchar *name;
+};
+
+static COPS_CNV CopsCnv [] =
+{
+ {ASN1_UNI, ASN1_NUL, COPS_NULL, "NULL"},
+ {ASN1_UNI, ASN1_INT, COPS_INTEGER, "INTEGER"},
+ {ASN1_UNI, ASN1_OTS, COPS_OCTETSTR, "OCTET STRING"},
+ {ASN1_UNI, ASN1_OJI, COPS_OBJECTID, "OBJECTID"},
+ {ASN1_APL, COPS_IPA, COPS_IPADDR, "IPADDR"},
+ {ASN1_APL, COPS_U32, COPS_UNSIGNED32,"UNSIGNED32"},
+ {ASN1_APL, COPS_TIT, COPS_TIMETICKS, "TIMETICKS"},
+ {ASN1_APL, COPS_OPQ, COPS_OPAQUE, "OPAQUE"},
+ {ASN1_APL, COPS_I64, COPS_INTEGER64, "INTEGER64"},
+ {ASN1_APL, COPS_U64, COPS_UNSIGNED64, "UNSIGNED64"},
+ {0, 0, -1, NULL}
+};
+
+static gchar *
+cops_tag_cls2syntax ( guint tag, guint cls, gushort *syntax)
+{
+ COPS_CNV *cnv;
+
+ cnv = CopsCnv;
+ while (cnv->syntax != -1)
+ {
+ if (cnv->tag == tag && cnv->class == cls)
+ {
+ *syntax = cnv->syntax;
+ return cnv->name;
+ }
+ cnv++;
+ }
+ return NULL;
+}
+
static const value_string cops_flags_vals[] = {
{ 0x00, "None" },
{ 0x01, "Solicited Message Flag Bit" },
COPS_OBJ_PDPREDIRADDR, /* PDP Redirect Address Object (PDPRedirAddr) */
COPS_OBJ_LASTPDPADDR, /* Last PDP Address (LastPDPaddr) */
COPS_OBJ_ACCTTIMER, /* Accounting Timer Object (AcctTimer) */
- COPS_OBJ_INTEGRITY, /* Message Integrity Object (Integrity) */
-
+ COPS_OBJ_INTEGRITY, /* Message Integrity Object (Integrity) */
COPS_LAST_C_NUM /* For error checking */
};
{ COPS_OBJ_ACCTTIMER, "Accounting Timer Object (AcctTimer)" },
{ COPS_OBJ_INTEGRITY, "Message Integrity Object (Integrity)" },
{ 0, NULL },
+};
+
+
+/* The different objects in COPS-PR messages */
+enum cops_s_num {
+ COPS_NO_PR_OBJECT, /* Not a COPS-PR Object type */
+ COPS_OBJ_PRID, /* Provisioning Instance Identifier (PRID) */
+ COPS_OBJ_PPRID, /* Prefix Provisioning Instance Identifier (PPRID) */
+ COPS_OBJ_EPD, /* Encoded Provisioning Instance Data (EPD) */
+ COPS_OBJ_GPERR, /* Global Provisioning Error Object (GPERR) */
+ COPS_OBJ_CPERR, /* PRC Class Provisioning Error Object (CPERR) */
+ COPS_OBJ_ERRPRID, /* Error Provisioning Instance Identifier (ErrorPRID)*/
+
+ COPS_LAST_S_NUM /* For error checking */
+};
+
+
+static const value_string cops_s_num_vals[] = {
+ { COPS_OBJ_PRID, "Provisioning Instance Identifier (PRID)" },
+ { COPS_OBJ_PPRID, "Prefix Provisioning Instance Identifier (PPRID)" },
+ { COPS_OBJ_EPD, "Encoded Provisioning Instance Data (EPD)" },
+ { COPS_OBJ_GPERR, "Global Provisioning Error Object (GPERR)" },
+ { COPS_OBJ_CPERR, "PRC Class Provisioning Error Object (CPERR)" },
+ { COPS_OBJ_ERRPRID, "Error Provisioning Instance Identifier (ErrorPRID)" },
+ { 0, NULL },
};
{ 0x08, "Configuration request" },
{ 0, NULL },
};
+/* S-Type is carried within the ClientSI Object for COPS-PR*/
+static const value_string cops_s_type_vals[] = {
+ { 0x01, "BER" },
+ { 0, NULL },
+};
/* Reason-Code is carried within the Reason object */
static const value_string cops_reason_vals[] = {
{13, "Unknown COPS Object" },
{14, "Authentication Failure" },
{15, "Authentication Required" },
+ {0, NULL },
+};
+/* Error-Code from GPERR object */
+static const value_string cops_gperror_vals[] = {
+ {1, "AvailMemLow" },
+ {2, "AvailMemExhausted" },
+ {3, "unknownASN.1Tag" },
+ {4, "maxMsgSizeExceeded" },
+ {5, "unknownError" },
+ {6, "maxRequestStatesOpen" },
+ {7, "invalidASN.1Length" },
+ {8, "invalidObjectPad" },
+ {9, "unknownPIBData" },
+ {10, "unknownCOPSPRObject" },
+ {11, "malformedDecision" },
+ {0, NULL },
};
+/* Error-Code from CPERR object */
+static const value_string cops_cperror_vals[] = {
+ {1, "priSpaceExhausted" },
+ {2, "priInstanceInvalid" },
+ {3, "attrValueInvalid" },
+ {4, "attrValueSupLimited" },
+ {5, "attrEnumSupLimited" },
+ {6, "attrMaxLengthExceeded" },
+ {7, "attrReferenceUnknown" },
+ {8, "priNotifyOnly" },
+ {9, "unknownPrc" },
+ {10, "tooFewAttrs" },
+ {11, "invalidAttrType" },
+ {12, "deletedInRef" },
+ {13, "priSpecificError" },
+ {0, NULL },
+};
+
+
/* Report-Type from Report-Type object */
static const value_string cops_report_type_vals[] = {
{1, " Success : Decision was successful at the PEP" },
{2, " Failure : Decision could not be completed by PEP" },
{3, " Accounting: Accounting update for an installed state" },
+ {0, NULL },
};
/* Initialize the protocol and registered fields */
static gint hf_cops_obj_c_num = -1;
static gint hf_cops_obj_c_type = -1;
+static gint hf_cops_obj_s_num = -1;
+static gint hf_cops_obj_s_type = -1;
+
static gint hf_cops_r_type_flags = -1;
static gint hf_cops_m_type_flags = -1;
static gint hf_cops_error = -1;
static gint hf_cops_error_sub = -1;
+static gint hf_cops_gperror = -1;
+static gint hf_cops_gperror_sub = -1;
+
+static gint hf_cops_cperror = -1;
+static gint hf_cops_cperror_sub = -1;
+
static gint hf_cops_katimer = -1;
static gint hf_cops_pepid = -1;
static gint ett_cops = -1;
static gint ett_cops_ver_flags = -1;
static gint ett_cops_obj = -1;
+static gint ett_cops_pr_obj = -1;
static gint ett_cops_obj_data = -1;
static gint ett_cops_r_type_flags = -1;
static gint ett_cops_itf = -1;
static gint ett_cops_reason = -1;
static gint ett_cops_decision = -1;
static gint ett_cops_error = -1;
+static gint ett_cops_clientsi = -1;
+static gint ett_cops_asn1 = -1;
+static gint ett_cops_gperror = -1;
+static gint ett_cops_cperror = -1;
static gint ett_cops_pdp = -1;
+void proto_reg_handoff_cops(void);
+
+static void dissect_cops_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
+
static int dissect_cops_object(tvbuff_t *tvb, guint32 offset, proto_tree *tree);
static int dissect_cops_object_data(tvbuff_t *tvb, guint32 offset, proto_tree *tree,
guint8 c_num, guint8 c_type, guint16 len);
+static int dissect_cops_pr_objects(tvbuff_t *tvb, guint32 offset, proto_tree *tree, guint16 pr_len);
+static int dissect_cops_pr_object_data(tvbuff_t *tvb, guint32 offset, proto_tree *tree,
+ guint8 s_num, guint8 s_type, guint16 len);
+
/* Code to actually dissect the packets */
-static void dissect_cops(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+static void
+dissect_cops(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
- guint8 op_code;
+ volatile int offset = 0;
+ int length_remaining;
+ guint32 msg_len;
+ int length;
+ tvbuff_t *next_tvb;
+
+ while (tvb_reported_length_remaining(tvb, offset) != 0) {
+ length_remaining = tvb_length_remaining(tvb, offset);
+ if (length_remaining == -1)
+ THROW(BoundsError);
+
+ /*
+ * Can we do reassembly?
+ */
+ if (cops_desegment && pinfo->can_desegment) {
+ /*
+ * Yes - is the COPS header split across segment
+ * boundaries?
+ */
+ if (length_remaining < 8) {
+ /*
+ * Yes. Tell the TCP dissector where
+ * the data for this message starts in
+ * the data it handed us, and how many
+ * more bytes we need, and return.
+ */
+ pinfo->desegment_offset = offset;
+ pinfo->desegment_len = 8 - length_remaining;
+ return;
+ }
+ }
+
+ /*
+ * Get the length of the COPS message.
+ */
+ msg_len = tvb_get_ntohl(tvb, offset + 4);
+
+ /*
+ * Can we do reassembly?
+ */
+ if (cops_desegment && pinfo->can_desegment) {
+ /*
+ * Yes - is the DNS packet split across segment
+ * boundaries?
+ */
+ if ((guint32)length_remaining < msg_len) {
+ /*
+ * Yes. Tell the TCP dissector where
+ * the data for this message starts in
+ * the data it handed us, and how many
+ * more bytes we need, and return.
+ */
+ pinfo->desegment_offset = offset;
+ pinfo->desegment_len =
+ msg_len - length_remaining;
+ return;
+ }
+ }
+
+ /*
+ * Construct a tvbuff containing the amount of the payload
+ * we have available. Make its reported length the
+ * amount of data in the COPS packet.
+ *
+ * XXX - if reassembly isn't enabled. the subdissector
+ * will throw a BoundsError exception, rather than a
+ * ReportedBoundsError exception. We really want
+ * a tvbuff where the length is "length", the reported
+ * length is "plen + 2", and the "if the snapshot length
+ * were infinite" length were the minimum of the
+ * reported length of the tvbuff handed to us and "plen+2",
+ * with a new type of exception thrown if the offset is
+ * within the reported length but beyond that third length,
+ * with that exception getting the "Unreassembled Packet"
+ * error.
+ */
+ length = length_remaining;
+ if ((guint32)length > msg_len)
+ length = msg_len;
+ next_tvb = tvb_new_subset(tvb, offset, length, msg_len);
+
+ /*
+ * Dissect the COPS packet.
+ *
+ * Catch the ReportedBoundsError exception; if this
+ * particular message happens to get a ReportedBoundsError
+ * exception, that doesn't mean that we should stop
+ * dissecting COPS messages within this frame or chunk
+ * of reassembled data.
+ *
+ * If it gets a BoundsError, we can stop, as there's nothing
+ * more to see, so we just re-throw it.
+ */
+ TRY {
+ dissect_cops_pdu(next_tvb, pinfo, tree);
+ }
+ CATCH(BoundsError) {
+ RETHROW;
+ }
+ CATCH(ReportedBoundsError) {
+ show_reported_bounds_error(tvb, pinfo, tree);
+ }
+ ENDTRY;
+
+ /*
+ * Skip the COPS packet.
+ */
+ offset += msg_len;
+ }
+}
- CHECK_DISPLAY_AS_DATA(proto_cops, tvb, pinfo, tree);
+static void
+dissect_cops_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ guint8 op_code;
- pinfo->current_proto = "COPS";
- if (check_col(pinfo->fd, COL_PROTOCOL))
- col_set_str(pinfo->fd, COL_PROTOCOL, "COPS");
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "COPS");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_clear(pinfo->cinfo, COL_INFO);
op_code = tvb_get_guint8(tvb, 1);
- if (check_col(pinfo->fd, COL_INFO))
- col_add_fstr(pinfo->fd, COL_INFO, "COPS %s",
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_add_fstr(pinfo->cinfo, COL_INFO, "COPS %s",
val_to_str(op_code, cops_op_code_vals, "Unknown Op Code"));
if (tree) {
proto_item *ti, *tv;
proto_tree *cops_tree, *ver_flags_tree;
- guint32 offset, msg_len;
+ guint32 msg_len;
+ guint32 offset = 0;
guint8 ver_flags;
gint garbage;
- offset = 0;
- ti = proto_tree_add_item(tree, proto_cops, tvb, offset, tvb_length(tvb), FALSE);
+ ti = proto_tree_add_item(tree, proto_cops, tvb, offset, -1, FALSE);
cops_tree = proto_item_add_subtree(ti, ett_cops);
/* Version and flags share the same byte, put them in a subtree */
proto_tree_add_uint(cops_tree, hf_cops_msg_len, tvb, offset, 4, tvb_get_ntohl(tvb, offset));
offset += 4;
- while (msg_len >= COPS_OBJECT_HDR_SIZE) {
- int consumed;
-
- consumed = dissect_cops_object(tvb, offset, cops_tree);
- if (consumed == 0)
- break;
- msg_len -= consumed;
- offset += consumed;
- }
+ while (tvb_reported_length_remaining(tvb, offset) >= COPS_OBJECT_HDR_SIZE)
+ offset += dissect_cops_object(tvb, offset, cops_tree);
garbage = tvb_length_remaining(tvb, offset);
if (garbage > 0)
char *type_str;
int ret;
- if (tvb_length_remaining(tvb, offset) < COPS_OBJECT_HDR_SIZE)
- return 0;
-
object_len = tvb_get_ntohs(tvb, offset);
c_num = tvb_get_guint8(tvb, offset + 2);
c_type = tvb_get_guint8(tvb, offset + 3);
/* Pad to 32bit boundary */
if (object_len % sizeof (guint32))
object_len += (sizeof (guint32) - object_len % sizeof (guint32));
+
+ return object_len;
+}
- return object_len;
-
+static int dissect_cops_pr_objects(tvbuff_t *tvb, guint32 offset, proto_tree *tree, guint16 pr_len)
+{
+ guint16 object_len, contents_len;
+ guint8 s_num, s_type;
+ char *type_str;
+ int ret;
+ proto_tree *cops_pr_tree, *obj_tree;
+ proto_item *ti;
+
+ cops_pr_tree = proto_item_add_subtree(tree, ett_cops_pr_obj);
+
+ while (pr_len >= COPS_OBJECT_HDR_SIZE) {
+ object_len = tvb_get_ntohs(tvb, offset);
+ s_num = tvb_get_guint8(tvb, offset + 2);
+
+ ti = proto_tree_add_uint_format(cops_pr_tree, hf_cops_obj_s_num, tvb, offset, object_len, s_num,
+ "%s", val_to_str(s_num, cops_s_num_vals, "Unknown"));
+ obj_tree = proto_item_add_subtree(cops_pr_tree, ett_cops_pr_obj);
+
+ proto_tree_add_uint(obj_tree, hf_cops_obj_len, tvb, offset, 2, tvb_get_ntohs(tvb, offset));
+ offset += 2;
+ pr_len -= 2;
+
+ proto_tree_add_uint(obj_tree, hf_cops_obj_s_num, tvb, offset, 1, s_num);
+ offset++;
+ pr_len--;
+
+ s_type = tvb_get_guint8(tvb, offset);
+ type_str = val_to_str(s_type, cops_s_type_vals, "Unknown");
+ proto_tree_add_text(obj_tree, tvb, offset, 1, "S-Type: %s%s%u%s",
+ type_str,
+ strlen(type_str) ? " (" : "",
+ s_type,
+ strlen(type_str) ? ")" : "");
+ offset++;
+ pr_len--;
+
+ contents_len = object_len - COPS_OBJECT_HDR_SIZE;
+ ret = dissect_cops_pr_object_data(tvb, offset, obj_tree, s_num, s_type, contents_len);
+ if (ret < 0)
+ break;
+
+ /*Pad to 32bit boundary */
+ if (object_len % sizeof (guint32))
+ object_len += (sizeof (guint32) - object_len % sizeof (guint32));
+
+ pr_len -= object_len - COPS_OBJECT_HDR_SIZE;
+ offset += object_len - COPS_OBJECT_HDR_SIZE;
+ }
+
+ return 0;
}
static int dissect_cops_object_data(tvbuff_t *tvb, guint32 offset, proto_tree *tree,
guint8 c_num, guint8 c_type, guint16 len)
{
proto_item *ti;
- proto_tree *r_type_tree, *itf_tree, *reason_tree, *dec_tree, *error_tree, *pdp_tree;
+ proto_tree *r_type_tree, *itf_tree, *reason_tree, *dec_tree, *error_tree, *clientsi_tree, *pdp_tree;
guint16 r_type, m_type, reason, reason_sub, cmd_code, cmd_flags, error, error_sub, tcp_port;
guint32 ipv4addr, ifindex;
struct e_in6_addr ipv6addr;
offset += 2;
proto_tree_add_uint(r_type_tree, hf_cops_m_type_flags, tvb, offset, 2, m_type);
- return 0;
break;
case COPS_OBJ_IN_INT:
case COPS_OBJ_OUT_INT:
}
proto_tree_add_uint(itf_tree, hf_cops_int_ifindex, tvb, offset, 4, ifindex);
- return 0;
break;
case COPS_OBJ_REASON:
reason = tvb_get_ntohs(tvb, offset);
} else
proto_tree_add_uint(reason_tree, hf_cops_reason_sub, tvb, offset, 2, reason_sub);
- return 0;
break;
case COPS_OBJ_DECISION:
case COPS_OBJ_LPDPDECISION:
- if (c_type != 1)
- break;
-
- cmd_code = tvb_get_ntohs(tvb, offset);
- cmd_flags = tvb_get_ntohs(tvb, offset + 2);
- ti = proto_tree_add_text(tree, tvb, offset, 4, "Contents: Command-Code: %s, Flags: %s",
+ if (c_type == 1) {
+ cmd_code = tvb_get_ntohs(tvb, offset);
+ cmd_flags = tvb_get_ntohs(tvb, offset + 2);
+ ti = proto_tree_add_text(tree, tvb, offset, 4, "Contents: Command-Code: %s, Flags: %s",
val_to_str(cmd_code, cops_dec_cmd_code_vals, "<Unknown value>"),
val_to_str(cmd_flags, cops_dec_cmd_flag_vals, "<Unknown flag>"));
- dec_tree = proto_item_add_subtree(ti, ett_cops_decision);
- proto_tree_add_uint(dec_tree, hf_cops_dec_cmd_code, tvb, offset, 2, cmd_code);
- offset += 2;
- proto_tree_add_uint(dec_tree, hf_cops_dec_flags, tvb, offset, 2, cmd_flags);
-
- return 0;
+ dec_tree = proto_item_add_subtree(ti, ett_cops_decision);
+ proto_tree_add_uint(dec_tree, hf_cops_dec_cmd_code, tvb, offset, 2, cmd_code);
+ offset += 2;
+ proto_tree_add_uint(dec_tree, hf_cops_dec_flags, tvb, offset, 2, cmd_flags);
+ } else if (c_type == 5) { /*COPS-PR Data*/
+ ti = proto_tree_add_text(tree, tvb, offset, 4, "Contents: %u bytes", len);
+ dec_tree = proto_item_add_subtree(ti, ett_cops_decision);
+ dissect_cops_pr_objects(tvb, offset, dec_tree, len);
+ }
+
break;
case COPS_OBJ_ERROR:
if (c_type != 1)
} else
proto_tree_add_uint(error_tree, hf_cops_error_sub, tvb, offset, 2, error_sub);
- return 0;
+ break;
+ case COPS_OBJ_CLIENTSI:
+
+ if (c_type != 2) /*Not COPS-PR data*/
+ break;
+
+ ti = proto_tree_add_text(tree, tvb, offset, 4, "Contents: %u bytes", len);
+ clientsi_tree = proto_item_add_subtree(ti, ett_cops_clientsi);
+
+ dissect_cops_pr_objects(tvb, offset, clientsi_tree, len);
+
break;
case COPS_OBJ_KATIMER:
if (c_type != 1)
if (tvb_get_ntohs(tvb, offset + 2) == 0)
proto_tree_add_text(tree, tvb, offset, 0, "Value of zero implies infinity.");
- return 0;
break;
case COPS_OBJ_PEPID:
if (c_type != 1)
proto_tree_add_item(tree, hf_cops_pepid, tvb, offset,
tvb_strnlen(tvb, offset, len) + 1, FALSE);
- return 0;
break;
case COPS_OBJ_REPORT_TYPE:
if (c_type != 1)
proto_tree_add_item(tree, hf_cops_report_type, tvb, offset, 2, FALSE);
- return 0;
break;
case COPS_OBJ_PDPREDIRADDR:
case COPS_OBJ_LASTPDPADDR:
offset += 2;
proto_tree_add_uint(pdp_tree, hf_cops_pdp_tcp_port, tvb, offset, 2, tcp_port);
- return 0;
break;
case COPS_OBJ_ACCTTIMER:
if (c_type != 1)
proto_tree_add_text(tree, tvb, offset, 0, "Value of zero means "
"there SHOULD be no unsolicited accounting updates.");
- return 0;
break;
case COPS_OBJ_INTEGRITY:
if (c_type != 1)
proto_tree_add_item(tree, hf_cops_seq_num, tvb, offset + 4, 4, FALSE);
proto_tree_add_text(tree, tvb, offset + 8 , len - 8, "Contents: Keyed Message Digest");
- return 0;
break;
default:
+ proto_tree_add_text(tree, tvb, offset, len, "Contents: %u bytes", len);
+
break;
}
- ti = proto_tree_add_text(tree, tvb, offset, len, "Contents: %u bytes", len);
+ return 0;
+}
+
+
+/*convert hex to binary string (1010....)*/
+gchar* xtobstr(guint8 *hex, guint len) {
+
+ guint i=0,j=0,k=0, bit=0;
+ gchar *binstr=NULL;
+ guint8 mask = 0x80;
+
+ binstr = g_malloc(8*sizeof(gchar)*len);
+
+ for (i=0; i < len; i++) {
+ for ( j=0; j<8; j++ ) { /* for each bit */
+ bit = (mask & hex[i]) ? 1 : 0; /* bit is 1 or 0 */
+ sprintf(&binstr[k++],"%d",bit); /*put it in string */
+ mask >>= 1; /* shift mask right */
+ }
+ mask = 0x80;
+ }
+ return binstr;
+}
+
+/*
+ * XXX - we should perhaps support reading PIBs, as we support reading
+ * MIBs, and use the PIBs we read to understand how to display COPS data
+ * just as we use the MIBs we read to understand how to display SNMP
+ * data.
+ */
+static int decode_cops_pr_asn1_data(tvbuff_t *tvb, guint32 offset,
+ proto_tree *tree, guint epdlen, gboolean inepd)
+{
+ ASN1_SCK asn1;
+ int start;
+ gboolean def;
+ guint length;
+
+ guint vb_length;
+ gushort vb_type;
+ gchar *vb_type_name;
+
+ int ret;
+ guint cls, con, tag;
+
+ gint32 vb_integer_value;
+ guint32 vb_uinteger_value;
+
+ guint8 *vb_octet_string;
+
+ subid_t *vb_oid;
+ guint vb_oid_length;
+
+ gchar *vb_display_string;
+
+ unsigned int i=0;
+ gchar *buf;
+ int len;
+
+ while (epdlen > 0) { /*while there is stuff to be decoded*/
+ asn1_open(&asn1, tvb, offset);
+
+ /* parse the type of the object */
+
+ start = asn1.offset;
+
+ ret = asn1_header_decode (&asn1, &cls, &con, &tag, &def,
+ &vb_length);
+ if (ret != ASN1_ERR_NOERROR)
+ return 0;
+ if (!def)
+ return ASN1_ERR_LENGTH_NOT_DEFINITE;
+
+ /* Convert the class, constructed flag, and tag to a type. */
+ vb_type_name = cops_tag_cls2syntax(tag, cls, &vb_type);
+ if (vb_type_name == NULL) {
+ /*
+ * Unsupported type.
+ * Dissect the value as an opaque string of octets.
+ */
+ vb_type_name = "unsupported type";
+ vb_type = COPS_OPAQUE;
+ }
+
+ /* parse the value */
+
+ switch (vb_type) {
+
+ case COPS_INTEGER:
+ ret = asn1_int32_value_decode(&asn1, vb_length,
+ &vb_integer_value);
+ if (ret != ASN1_ERR_NOERROR)
+ return ret;
+ length = asn1.offset - start;
+ if (tree) {
+ proto_tree_add_text(tree, asn1.tvb, offset, length,
+ "Value: %s: %d (%#x)", vb_type_name,
+ vb_integer_value, vb_integer_value);
+ }
+ break;
+
+ case COPS_UNSIGNED32:
+ case COPS_TIMETICKS:
+ ret = asn1_uint32_value_decode(&asn1, vb_length,
+ &vb_uinteger_value);
+ if (ret != ASN1_ERR_NOERROR)
+ return ret;
+ length = asn1.offset - start;
+ if (tree) {
+ proto_tree_add_text(tree, asn1.tvb, offset, length,
+ "Value: %s: %u (%#x)", vb_type_name,
+ vb_uinteger_value, vb_uinteger_value);
+ }
+ break;
+
+ case COPS_OCTETSTR:
+ case COPS_IPADDR:
+ case COPS_OPAQUE:
+ case COPS_UNSIGNED64:
+ case COPS_INTEGER64:
+ ret = asn1_string_value_decode (&asn1, vb_length,
+ &vb_octet_string);
+ if (ret != ASN1_ERR_NOERROR)
+ return ret;
+ length = asn1.offset - start;
+ if (tree) {
+ /* if this EPD belongs to ipFilter or
+ frwkPrcSupport Entries print it correctly) */
+ if ((strncmp(last_decoded_prid,"1.3.6.1.2.2.2.3.2.1",19)==0) || (strncmp(last_decoded_prid,"1.3.6.1.2.2.2.1.1.1",19)==0)) {
+ if(strncmp(last_decoded_prid,"1.3.6.1.2.2.2.3.2.1",19)==0) {
+ i=0;/* EPD belongs to
+ IpFilters, print as
+ bytes (IPv6 not printed
+ ok - yet)*/
+ } else {
+ /* EPD belongs to
+ frwkPrcSupportEntry,
+ convert hex byte(s) to
+ binary string*/
+ vb_display_string =
+ xtobstr(vb_octet_string,
+ vb_length);
+
+ proto_tree_add_text(tree, asn1.tvb,
+ offset, length,
+ "Value: %s: %s", vb_type_name,
+ vb_display_string);
+
+ g_free(vb_octet_string);
+ g_free(vb_display_string);
+
+ break;
+ }
+ } else {
+ /* EPD doesn't belong to ipFilter or
+ frwkPrcSupport Entries;
+ check for unprintable characters*/
+
+ for (i = 0; i < vb_length; i++) {
+ if (!(isprint(vb_octet_string[i])
+ ||isspace(vb_octet_string[i])))
+ break;
+ }
+ }
+
+ /*
+ * If some characters are not printable,
+ * display the string as bytes.
+ */
+ if (i < vb_length) {
+ /*
+ * We stopped, due to a non-printable
+ * character, before we got to the end
+ * of the string.
+ */
+ vb_display_string =
+ g_malloc(4*vb_length);
+ buf = &vb_display_string[0];
+ len = sprintf(buf, "%03u",
+ vb_octet_string[0]);
+ buf += len;
+ for (i = 1; i < vb_length; i++) {
+ len = sprintf(buf, ".%03u",
+ vb_octet_string[i]);
+ buf += len;
+ }
+ proto_tree_add_text(tree,
+ asn1.tvb, offset, length,
+ "Value: %s: %s", vb_type_name,
+ vb_display_string);
+ g_free(vb_display_string);
+ } else {
+ proto_tree_add_text(tree,
+ asn1.tvb, offset, length,
+ "Value: %s: %.*s", vb_type_name,
+ (int)vb_length,
+ SAFE_STRING(vb_octet_string));
+ }
+ }
+ g_free(vb_octet_string);
+ break;
+
+ case COPS_NULL:
+ ret = asn1_null_decode (&asn1, vb_length);
+ if (ret != ASN1_ERR_NOERROR)
+ return ret;
+ length = asn1.offset - start;
+ if (tree) {
+ proto_tree_add_text(tree, asn1.tvb, offset, length,
+ "Value: %s", vb_type_name);
+ }
+ break;
+
+ case COPS_OBJECTID:
+ ret = asn1_oid_value_decode (&asn1, vb_length, &vb_oid,
+ &vb_oid_length);
+ if (ret != ASN1_ERR_NOERROR)
+ return ret;
+ length = asn1.offset - start;
+
+ if (tree) {
+ vb_display_string = format_oid(vb_oid,
+ vb_oid_length);
+ proto_tree_add_text(tree, asn1.tvb, offset, length,
+ "Value: %s: %s", vb_type_name,
+ vb_display_string);
+
+ if (inepd) {
+ /* we're decoding EPD */
+ g_free(vb_display_string);
+ } else {
+ /* we're decoding PRID, so let's store
+ the OID of the PRID so that later
+ when we're decoding this PRID's EPD
+ we can finetune the output. */
+ if (last_decoded_prid)
+ g_free(last_decoded_prid);
+ last_decoded_prid = vb_display_string;
+ }
+ }
+ g_free(vb_oid);
+ break;
+
+ default:
+ g_assert_not_reached();
+ return ASN1_ERR_WRONG_TYPE;
+ }
+
+ asn1_close(&asn1,&offset);
+
+ epdlen -= length;
+ }
+ return 0;
+}
+
+static int dissect_cops_pr_object_data(tvbuff_t *tvb, guint32 offset, proto_tree *tree,
+ guint8 s_num, guint8 s_type, guint16 len)
+{
+ proto_item *ti;
+ proto_tree *asn1_object_tree, *gperror_tree, *cperror_tree;
+ guint16 gperror=0, gperror_sub=0, cperror=0, cperror_sub=0;
+
+ switch (s_num){
+ case COPS_OBJ_PRID:
+ if (s_type != 1) /* Not Provisioning Instance Identifier (PRID) */
+ break;
+
+ ti=proto_tree_add_text(tree, tvb, offset, len, "Contents:");
+ asn1_object_tree = proto_item_add_subtree(ti, ett_cops_asn1);
+
+ decode_cops_pr_asn1_data(tvb, offset, asn1_object_tree, len, FALSE);
+
+ break;
+ case COPS_OBJ_PPRID:
+ if (s_type != 1) /* Not Prefix Provisioning Instance Identifier (PPRID) */
+ break;
+
+ ti = proto_tree_add_text(tree, tvb, offset, len, "Contents:");
+ asn1_object_tree = proto_item_add_subtree(ti, ett_cops_asn1);
+
+ decode_cops_pr_asn1_data(tvb, offset, asn1_object_tree, len, FALSE);
+
+ break;
+ case COPS_OBJ_EPD:
+ if (s_type != 1) /* Not Encoded Provisioning Instance Data (EPD) */
+ break;
+
+ ti = proto_tree_add_text(tree, tvb, offset, len, "Contents:");
+ asn1_object_tree = proto_item_add_subtree(ti, ett_cops_asn1);
+
+ decode_cops_pr_asn1_data(tvb, offset, asn1_object_tree, len, TRUE);
+
+ break;
+ case COPS_OBJ_GPERR:
+ if (s_type != 1) /* Not Global Provisioning Error Object (GPERR) */
+ break;
+
+ gperror = tvb_get_ntohs(tvb, offset);
+ gperror_sub = tvb_get_ntohs(tvb, offset + 2);
+ ti = proto_tree_add_text(tree, tvb, offset, 4, "Contents: Error-Code: %s, Error Sub-code: 0x%04x",
+ val_to_str(gperror, cops_gperror_vals, "<Unknown value>"), gperror_sub);
+ gperror_tree = proto_item_add_subtree(ti, ett_cops_gperror);
+ proto_tree_add_uint(gperror_tree, hf_cops_gperror, tvb, offset, 2, gperror);
+ offset += 2;
+ if (cperror == 13) {
+ proto_tree_add_text(gperror_tree, tvb, offset, 2, "Error Sub-code: "
+ "Unknown object's C-Num %u, C-Type %u",
+ tvb_get_guint8(tvb, offset), tvb_get_guint8(tvb, offset + 1));
+ } else
+ proto_tree_add_uint(gperror_tree, hf_cops_gperror_sub, tvb, offset, 2, gperror_sub);
+
+ break;
+ case COPS_OBJ_CPERR:
+ if (s_type != 1) /*Not PRC Class Provisioning Error Object (CPERR) */
+ break;
+
+ break;
+
+ cperror = tvb_get_ntohs(tvb, offset);
+ cperror_sub = tvb_get_ntohs(tvb, offset + 2);
+ ti = proto_tree_add_text(tree, tvb, offset, 4, "Contents: Error-Code: %s, Error Sub-code: 0x%04x",
+ val_to_str(cperror, cops_cperror_vals, "<Unknown value>"), cperror_sub);
+ cperror_tree = proto_item_add_subtree(ti, ett_cops_cperror);
+ proto_tree_add_uint(cperror_tree, hf_cops_cperror, tvb, offset, 2, cperror);
+ offset += 2;
+ if (cperror == 13) {
+ proto_tree_add_text(cperror_tree, tvb, offset, 2, "Error Sub-code: "
+ "Unknown object's S-Num %u, C-Type %u",
+ tvb_get_guint8(tvb, offset), tvb_get_guint8(tvb, offset + 1));
+ } else
+ proto_tree_add_uint(cperror_tree, hf_cops_cperror_sub, tvb, offset, 2, cperror_sub);
+
+ break;
+ case COPS_OBJ_ERRPRID:
+ if (s_type != 1) /*Not Error Provisioning Instance Identifier (ErrorPRID)*/
+ break;
+
+ ti = proto_tree_add_text(tree, tvb, offset, len, "Contents:");
+ asn1_object_tree = proto_item_add_subtree(ti, ett_cops_asn1);
+
+ decode_cops_pr_asn1_data(tvb, offset, asn1_object_tree, len, FALSE);
+
+ break;
+ default:
+ proto_tree_add_text(tree, tvb, offset, len, "Contents: %u bytes", len);
+ break;
+ }
return 0;
}
+
/* Register the protocol with Ethereal */
void proto_register_cops(void)
{
-
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_cops_ver_flags,
{ "Version and Flags", "cops.ver_flags",
FT_UINT8, BASE_HEX, NULL, 0x0,
- "Version and Flags in COPS Common Header" }
+ "Version and Flags in COPS Common Header", HFILL }
},
{ &hf_cops_version,
{ "Version", "cops.version",
FT_UINT8, BASE_DEC, NULL, 0xF0,
- "Version in COPS Common Header" }
+ "Version in COPS Common Header", HFILL }
},
{ &hf_cops_flags,
{ "Flags", "cops.flags",
FT_UINT8, BASE_HEX, VALS(cops_flags_vals), 0x0F,
- "Flags in COPS Common Header" }
+ "Flags in COPS Common Header", HFILL }
},
{ &hf_cops_op_code,
{ "Op Code", "cops.op_code",
FT_UINT8, BASE_DEC, VALS(cops_op_code_vals), 0x0,
- "Op Code in COPS Common Header" }
+ "Op Code in COPS Common Header", HFILL }
},
{ &hf_cops_client_type,
{ "Client Type", "cops.client_type",
FT_UINT16, BASE_DEC, NULL, 0x0,
- "Client Type in COPS Common Header" }
+ "Client Type in COPS Common Header", HFILL }
},
{ &hf_cops_msg_len,
{ "Message Length", "cops.msg_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
- "Message Length in COPS Common Header" }
+ "Message Length in COPS Common Header", HFILL }
},
{ &hf_cops_obj_len,
{ "Object Length", "cops.obj.len",
FT_UINT32, BASE_DEC, NULL, 0x0,
- "Object Length in COPS Object Header" }
+ "Object Length in COPS Object Header", HFILL }
},
{ &hf_cops_obj_c_num,
{ "C-Num", "cops.c_num",
FT_UINT8, BASE_DEC, VALS(cops_c_num_vals), 0x0,
- "C-Num in COPS Object Header" }
+ "C-Num in COPS Object Header", HFILL }
},
{ &hf_cops_obj_c_type,
{ "C-Type", "cops.c_type",
FT_UINT8, BASE_DEC, NULL, 0x0,
- "C-Type in COPS Object Header" }
+ "C-Type in COPS Object Header", HFILL }
+ },
+
+ { &hf_cops_obj_s_num,
+ { "S-Num", "cops.s_num",
+ FT_UINT8, BASE_DEC, VALS(cops_s_num_vals), 0x0,
+ "S-Num in COPS-PR Object Header", HFILL }
+ },
+ { &hf_cops_obj_s_type,
+ { "S-Type", "cops.s_type",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "S-Type in COPS-PR Object Header", HFILL }
},
+
{ &hf_cops_r_type_flags,
{ "R-Type", "cops.context.r_type",
FT_UINT16, BASE_HEX, VALS(cops_r_type_vals), 0xFFFF,
- "R-Type in COPS Context Object" }
+ "R-Type in COPS Context Object", HFILL }
},
{ &hf_cops_m_type_flags,
{ "M-Type", "cops.context.m_type",
FT_UINT16, BASE_HEX, NULL, 0xFFFF,
- "M-Type in COPS Context Object" }
+ "M-Type in COPS Context Object", HFILL }
},
{ &hf_cops_in_int_ipv4,
{ "IPv4 address", "cops.in-int.ipv4",
FT_IPv4, 0, NULL, 0xFFFF,
- "IPv4 address in COPS IN-Int object" }
+ "IPv4 address in COPS IN-Int object", HFILL }
},
{ &hf_cops_in_int_ipv6,
{ "IPv6 address", "cops.in-int.ipv6",
FT_IPv6, 0, NULL, 0xFFFF,
- "IPv6 address in COPS IN-Int object" }
+ "IPv6 address in COPS IN-Int object", HFILL }
},
{ &hf_cops_out_int_ipv4,
{ "IPv4 address", "cops.out-int.ipv4",
FT_IPv4, 0, NULL, 0xFFFF,
- "IPv4 address in COPS OUT-Int object" }
+ "IPv4 address in COPS OUT-Int object", HFILL }
},
{ &hf_cops_out_int_ipv6,
{ "IPv6 address", "cops.out-int.ipv6",
FT_IPv6, 0, NULL, 0xFFFF,
- "IPv6 address in COPS OUT-Int" }
+ "IPv6 address in COPS OUT-Int", HFILL }
},
{ &hf_cops_int_ifindex,
{ "ifIndex", "cops.in-out-int.ifindex",
FT_UINT32, BASE_DEC, NULL, 0x0,
- "If SNMP is supported, corresponds to MIB-II ifIndex" }
+ "If SNMP is supported, corresponds to MIB-II ifIndex", HFILL }
},
{ &hf_cops_reason,
{ "Reason", "cops.reason",
FT_UINT16, BASE_DEC, VALS(cops_reason_vals), 0,
- "Reason in Reason object" }
+ "Reason in Reason object", HFILL }
},
{ &hf_cops_reason_sub,
{ "Reason Sub-code", "cops.reason_sub",
FT_UINT16, BASE_HEX, NULL, 0,
- "Reason Sub-code in Reason object" }
+ "Reason Sub-code in Reason object", HFILL }
},
{ &hf_cops_dec_cmd_code,
{ "Command-Code", "cops.decision.cmd",
FT_UINT16, BASE_DEC, VALS(cops_dec_cmd_code_vals), 0,
- "Command-Code in Decision/LPDP Decision object" }
+ "Command-Code in Decision/LPDP Decision object", HFILL }
},
{ &hf_cops_dec_flags,
{ "Flags", "cops.decision.flags",
FT_UINT16, BASE_HEX, VALS(cops_dec_cmd_flag_vals), 0xffff,
- "Flags in Decision/LPDP Decision object" }
+ "Flags in Decision/LPDP Decision object", HFILL }
},
{ &hf_cops_error,
{ "Error", "cops.error",
FT_UINT16, BASE_DEC, VALS(cops_error_vals), 0,
- "Error in Error object" }
+ "Error in Error object", HFILL }
},
{ &hf_cops_error_sub,
{ "Error Sub-code", "cops.error_sub",
FT_UINT16, BASE_HEX, NULL, 0,
- "Error Sub-code in Error object" }
+ "Error Sub-code in Error object", HFILL }
},
{ &hf_cops_katimer,
{ "Contents: KA Timer Value", "cops.katimer.value",
FT_UINT16, BASE_DEC, NULL, 0,
- "Keep-Alive Timer Value in KATimer object" }
+ "Keep-Alive Timer Value in KATimer object", HFILL }
},
{ &hf_cops_pepid,
{ "Contents: PEP Id", "cops.pepid.id",
FT_STRING, BASE_NONE, NULL, 0,
- "PEP Id in PEPID object" }
+ "PEP Id in PEPID object", HFILL }
},
{ &hf_cops_report_type,
{ "Contents: Report-Type", "cops.report_type",
FT_UINT16, BASE_DEC, VALS(cops_report_type_vals), 0,
- "Report-Type in Report-Type object" }
+ "Report-Type in Report-Type object", HFILL }
},
{ &hf_cops_pdprediraddr_ipv4,
{ "IPv4 address", "cops.pdprediraddr.ipv4",
FT_IPv4, 0, NULL, 0xFFFF,
- "IPv4 address in COPS PDPRedirAddr object" }
+ "IPv4 address in COPS PDPRedirAddr object", HFILL }
},
{ &hf_cops_pdprediraddr_ipv6,
{ "IPv6 address", "cops.pdprediraddr.ipv6",
FT_IPv6, 0, NULL, 0xFFFF,
- "IPv6 address in COPS PDPRedirAddr object" }
+ "IPv6 address in COPS PDPRedirAddr object", HFILL }
},
{ &hf_cops_lastpdpaddr_ipv4,
{ "IPv4 address", "cops.lastpdpaddr.ipv4",
FT_IPv4, 0, NULL, 0xFFFF,
- "IPv4 address in COPS LastPDPAddr object" }
+ "IPv4 address in COPS LastPDPAddr object", HFILL }
},
{ &hf_cops_lastpdpaddr_ipv6,
{ "IPv6 address", "cops.lastpdpaddr.ipv6",
FT_IPv6, 0, NULL, 0xFFFF,
- "IPv6 address in COPS LastPDPAddr object" }
+ "IPv6 address in COPS LastPDPAddr object", HFILL }
},
{ &hf_cops_pdp_tcp_port,
{ "TCP Port Number", "cops.pdp.tcp_port",
FT_UINT32, BASE_DEC, NULL, 0x0,
- "TCP Port Number of PDP in PDPRedirAddr/LastPDPAddr object" }
+ "TCP Port Number of PDP in PDPRedirAddr/LastPDPAddr object", HFILL }
},
{ &hf_cops_accttimer,
{ "Contents: ACCT Timer Value", "cops.accttimer.value",
FT_UINT16, BASE_DEC, NULL, 0,
- "Accounting Timer Value in AcctTimer object" }
+ "Accounting Timer Value in AcctTimer object", HFILL }
},
{ &hf_cops_key_id,
{ "Contents: Key ID", "cops.integrity.key_id",
FT_UINT32, BASE_DEC, NULL, 0,
- "Key ID in Integrity object" }
+ "Key ID in Integrity object", HFILL }
},
{ &hf_cops_seq_num,
{ "Contents: Sequence Number", "cops.integrity.seq_num",
FT_UINT32, BASE_DEC, NULL, 0,
- "Sequence Number in Integrity object" }
+ "Sequence Number in Integrity object", HFILL }
+ },
+ { &hf_cops_gperror,
+ { "Error", "cops.gperror",
+ FT_UINT16, BASE_DEC, VALS(cops_gperror_vals), 0,
+ "Error in Error object", HFILL }
+ },
+ { &hf_cops_gperror_sub,
+ { "Error Sub-code", "cops.gperror_sub",
+ FT_UINT16, BASE_HEX, NULL, 0,
+ "Error Sub-code in Error object", HFILL }
+ },
+ { &hf_cops_cperror,
+ { "Error", "cops.cperror",
+ FT_UINT16, BASE_DEC, VALS(cops_cperror_vals), 0,
+ "Error in Error object", HFILL }
},
+ { &hf_cops_cperror_sub,
+ { "Error Sub-code", "cops.cperror_sub",
+ FT_UINT16, BASE_HEX, NULL, 0,
+ "Error Sub-code in Error object", HFILL }
+ },
+
};
/* Setup protocol subtree array */
&ett_cops,
&ett_cops_ver_flags,
&ett_cops_obj,
+ &ett_cops_pr_obj,
&ett_cops_obj_data,
&ett_cops_r_type_flags,
&ett_cops_itf,
&ett_cops_reason,
&ett_cops_decision,
&ett_cops_error,
+ &ett_cops_clientsi,
+ &ett_cops_asn1,
+ &ett_cops_gperror,
+ &ett_cops_cperror,
&ett_cops_pdp,
};
+ module_t* cops_module;
+
/* Register the protocol name and description */
- proto_cops = proto_register_protocol("Common Open Policy Service", "cops");
+ proto_cops = proto_register_protocol("Common Open Policy Service",
+ "COPS", "cops");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_cops, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
+
+ /* Register our configuration options for cops,
+ * particularly our ports
+ */
+ cops_module = prefs_register_protocol(proto_cops,
+ proto_reg_handoff_cops);
+ prefs_register_uint_preference(cops_module,"tcp.cops_port",
+ "COPS TCP Port",
+ "Set the TCP port for COPS messages",
+ 10,&global_cops_tcp_port);
+ prefs_register_bool_preference(cops_module, "desegment",
+ "Desegment all COPS messages spanning multiple TCP segments",
+ "Whether the COPS dissector should desegment all messages spanning multiple TCP segments",
+ &cops_desegment);
};
void
proto_reg_handoff_cops(void)
{
- dissector_add("tcp.port", TCP_PORT_COPS, dissect_cops);
+ static int cops_prefs_initialized = FALSE;
+ static dissector_handle_t cops_handle;
+
+ if (!cops_prefs_initialized) {
+ cops_handle = create_dissector_handle(dissect_cops, proto_cops);
+ cops_prefs_initialized = TRUE;
+ } else
+ dissector_delete("tcp.port",cops_tcp_port,cops_handle);
+
+ /* Set our port numbers for future use */
+ cops_tcp_port = global_cops_tcp_port;
+
+ dissector_add("tcp.port", cops_tcp_port, cops_handle);
}
git.samba.org / obnox / wireshark / wip.git / blobdiff